include<bits/stdc++.h>

using namespace std;
int main()
{
int n,flag;
while(cin>>n>>flag)
{

string name[n];
int score[n],newscore[n];
for(int i=0;i<n;i++)
{
    cin>>name[i]>>score[i];
    newscore[i]=score[i];
}
sort(newscore,newscore+n);
if(flag==1)
{
  for(int i=0;i<n;i++) 
  {
      if((newscore[i]==newscore[i+1])&&(i!=n-1))
      {
          continue;
      }
      for(int j=0;j<n;j++)
      {
          if(newscore[i]==score[j])
          {
              cout<<name[j]<<' '<<score[j]<<endl;

          }
      }

  }
}
if(flag==0)
{
  for(int i=n-1;i>=0;i--) 
  {
      if((newscore[i]==newscore[i+1])&&(i!=n-1))
      {
          continue;
      }

      for(int j=0;j<n;j++)
      {
          if(newscore[i]==score[j])
          {
              cout<<name[j]<<' '<<score[j]<<endl;

          }
      }

  }
}

}
return 0;
}